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Sodium sulfate CAS#7757-82-6
CAS Number:7757-82-6
Chemical Formula: Na2SO4
Synonyms:
Disodium sulfate
Disodium monosulfate
dibasicsodiumsulfate
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Appearance: White Solid
Sodium sulfate CAS#7757-82-6
Sodium Sulfate(7757-82-6), Na2S04, also known as thenardite and salt cake, is a crystalline compound that melts at 888°C (1632°F). Sodium Sulfate is found in natural form(thenardite) in Chile and Spain. It is used in the manufacture of paperboard, glass,and freezing mixtures. The hydrate, Na2S04·10H20, also known as "Glauber's salt," is a white water-soluble solid formed by heating Sodium chloride and sulfuric acid. It is used in dyeing,manufacturing glass,and in the preparation of sodium bisulfate.| Sodium sulfate Chemical Properties |
| Melting point | 884 °C (lit.) |
| Boiling point | 1700°C |
| bulk density | 1400-1600kg/m3 |
| density | 2.68 g/mL at 25 °C (lit.) |
| refractive index | 1.484 |
| storage temp. | Store at +5°C to +30°C. |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| form | powder (fine) |
| pka | 4.76 |
| color | White |
| Specific Gravity | 2.68 |
| Odor | wh. cryst. or powd., odorless, bitter saline taste |
| PH | 5.2-8.0 (50g/l, H2O, 20℃) |
| PH Range | 5.2 - 9.2 |
| Water Solubility | 18.5 mg/L |
| λmax | λ: 260 nm Amax: 0.015 λ: 280 nm Amax: 0.015 |
| Sensitive | Hygroscopic |
| Merck | 14,8680 |
| Dielectric constant | 2.7（Ambient） |
| Stability: | Stable. Incompatible with strong acids, aluminium, magnesium, strong bases. Hygroscopic. |
| Cosmetics Ingredients Functions | BULKING VISCOSITY CONTROLLING |
| LogP | -1.031 (est) |
| CAS DataBase Reference | 7757-82-6(CAS DataBase Reference) |
| NIST Chemistry Reference | Sodium sulfate(7757-82-6) |
| EPA Substance Registry System | Sodium sulfate (7757-82-6) |
| Safety Information |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 24/25 |
| WGK Germany | 1 |
| RTECS | WE1650000 |
| F | 3 |
| TSCA | Yes |
| HS Code | 28331100 |
| Hazardous Substances Data | 7757-82-6(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: > 2000 mg/kg |
Product Application of Sodium sulfate CAS#7757-82-6
Sodium sulfate is an important raw material in the manufacturing of glass and paper with the maximum usage amount in the paper and cellulose industry which accounts for around 70% of the total amount. Sodium sulfate is the component of synthetic detergent and is a neutral salt. It can be added to the detergent to reduce the surface tension as well as increases the solubility of the detergent. It is also be used as the dye diluent and the auxiliary agent of the dye printing, as direct dyes, sulfur dyes, vat dyes and other accelerant of dyed cotton fiber, as retarding agent for direct dye silk. In the chemical industry, it can be used as the raw material for the manufacturing of sodium sulfide, gypsum, sodium silicate and other chemical products. It has been now developed of the method for making sulfuric acid, sulfur, soda ash, ammonium sulfate and other products with sodium sulfate. However, due to the high cost of these methods, it has not yet been widely applied. It has been commonly used by laboratory system for using sodium sulfate as cold agent. Glauber's salt has been used as a laxative medicine. The sodium sulfate entering into the body is largely stuck in the gastrointestinal tract without being absorbed and being maintained at certain penetration. It can increase the volume of the intestines and induce intestinal peristalsis with diarrhea effect. Sodium sulfate is the antidote of barium and lead poisoning. Upon lead poisoning, people can apply gastric lavage with 10% Glauber's salt or orally administer 1 to 2% sodium sulfate solution.
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